<!DOCTYPE html>
<html lang="zh-CN">

<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>事件的基本使用</title>
    <!-- 引入vue -->
    <script type="text/javascript" src="../js/vue.js"></script>
</head>

<body>
    <!-- 

    -->
    <!-- 准备好一个容器 -->
    <div id="root">
        <!-- 遍历数组 -->
        <h2>人员列表</h2>
        <input type="text" placeholder="请输入文字" v-model="keyWord">
        <ul>
            <li v-for="(p,index) of filPersons" :key="index">
                {{p.name}}-{{p.age}}-{{p.sex}}
            </li>
        </ul>
    </div>
    <script type="text/javascript">
        Vue.config.productionTip = false;//阻止vue在启动时生成生产提示
        //用watch实现
        //#region 
        /* const vm = new Vue({
             el: "#root",
             data: {
                 keyWord: "",
                 persons: [
                     { id: "001", name: "马冬梅", age: 19, sex: '女' },
                     { id: "002", name: "周冬雨", age: 20, sex: '女' },
                     { id: "003", name: "周杰伦", age: 21, sex: '男' },
                     { id: "004", name: "温兆伦", age: 22, sex: '男' },
                 ],
 
                 filPersons: []
             },
             watch: {
                 keyWord: {
                     immediate: true,
                     handler(val) {
                         this.filPersons = this.persons.filter((p) => {
                             return p.name.indexOf(val) !== -1
                         })
                     }
                 }
             }
         })*/
        //#endregion 
        //用computed实现
        const vm = new Vue({
            el: "#root",
            data: {
                keyWord: "",
                persons: [
                    { id: "001", name: "马冬梅", age: 19, sex: '女' },
                    { id: "002", name: "周冬雨", age: 20, sex: '女' },
                    { id: "003", name: "周杰伦", age: 21, sex: '男' },
                    { id: "004", name: "温兆伦", age: 22, sex: '男' },
                ],
            },
            computed: {
                filPersons() {
                    return this.persons.filter((p) => {
                        return p.name.indexOf(this.keyWord) !== -1
                    });
                }
            },
        })
    </script>
</body>

</html>